FR658378A - Improvements to electromagnetic devices transmitting vibrations, such as loudspeakers - Google Patents

Improvements to electromagnetic devices transmitting vibrations, such as loudspeakers

Info

Publication number
FR658378A
FR658378A FR658378DA FR658378A FR 658378 A FR658378 A FR 658378A FR 658378D A FR658378D A FR 658378DA FR 658378 A FR658378 A FR 658378A
Authority
FR
France
Prior art keywords
loudspeakers
electromagnetic devices
devices transmitting
transmitting vibrations
vibrations
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WIRELESS MUSIC Ltd
Original Assignee
WIRELESS MUSIC Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WIRELESS MUSIC Ltd filed Critical WIRELESS MUSIC Ltd
Application granted granted Critical
Publication of FR658378A publication Critical patent/FR658378A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
FR658378D 1927-08-05 1928-07-26 Improvements to electromagnetic devices transmitting vibrations, such as loudspeakers Expired FR658378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20732/27A GB299537A (en) 1927-08-05 1927-08-05 Improvements in or relating to electro-mechanical translating devices, such for example as loud speakers

Publications (1)

Publication Number Publication Date
FR658378A true FR658378A (en) 1929-06-04

Family

ID=10150715

Family Applications (1)

Application Number Title Priority Date Filing Date
FR658378D Expired FR658378A (en) 1927-08-05 1928-07-26 Improvements to electromagnetic devices transmitting vibrations, such as loudspeakers

Country Status (4)

Country Link
US (1) US1786584A (en)
BE (1) BE353324A (en)
FR (1) FR658378A (en)
GB (1) GB299537A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114666704A (en) * 2022-03-17 2022-06-24 维沃移动通信有限公司 Sound generating device and electronic equipment

Also Published As

Publication number Publication date
GB299537A (en) 1928-11-01
BE353324A (en)
US1786584A (en) 1930-12-30

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